Este é um excerto dos aspetos mais relevantes da versão 3.0.1 do documento D2.8.I.2 INSPIRE Specification on Geographical Grid Systems – Guidelines
INSPIRE Geographical grid systems form a geo-referencing framework for the themes where grids with fixed and unambiguously defined location of equal-area grid cells are needed.
A geographical grid is associated with predefined resolutions and a coding system for identifying individual cells.
The grid [...] is intended more for statistical reporting purposes [...].
- The Grid_ETRS89-LAEA [...] shall be used as a geo-referencing framework for the themes where grids with fixed and unambiguously defined locations of equal-area grid cells are needed.
- For identification of an individual resolution level the cell size in metres shall be appended ([e.g.] Grid_ETRS89-LAEA_100K).
- The reference point of a grid cell for grids based on ETRS89-LAEA shall be the lower left corner of the grid cell.
- [...] the grid points of all grids based on ETRS89-LAEA shall coincide with grid points at Grid_ETRS89-LAEA [i.e. para quadrículas que não sejam recursivamente coerentes].